Finding the Fourth Proportional to 22,147.81, 30,567.48 and 13,200.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,147.81 : 30,567.48 = 13,200.50 : x
2. Step 2: Convert to fraction form
   22,147.81/30,567.48 = 13,200.50/x
3. Step 3: Cross multiply
   22,147.81x = 30,567.48 × 13,200.50
4. Step 4: Simplify right side
   22,147.81x = 403,506,120.91
5. Step 5: Solve for x
   x = 403,506,120.91/22,147.81
6. Step 6: Final answer
   x = 18,218.78